# Copyright (C) 2006 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Tree creator for many commits, but no changes"""

from bzrlib import (
    bzrdir,
    )

from bzrlib.benchmarks.tree_creator import TreeCreator


class SimpleManyCommitTreeCreator(TreeCreator):
    """Create an empty tree with lots of commits"""

    def __init__(self, test, link_bzr=False):
        super(SimpleManyCommitTreeCreator, self).__init__(test,
            tree_name='many_commit_tree',
            link_bzr=link_bzr,
            link_working=False,
            hot_cache=True)

    def _create_tree(self, root, in_cache=False):
        tree = bzrdir.BzrDir.create_standalone_workingtree(root)
        tree.lock_write()
        try:
            for i in xrange(1000):
                tree.commit('no-changes commit %d' % i)
        finally:
            tree.unlock()
        if in_cache:
            self._protect_files(root+'/.bzr')

        return tree
